Joint for a water-carrying pipe system

Abstract

A joint for a water-carrying pipe system, e.g. for a garden spray, has a joint shoulder with a disk-like part for each pipe end to be connected. The two disk parts are arranged on either side of the hose passed centrally through the joint. On either side of the joint, the hose is connected to the pipe ends in that it is passed through an opening, whose internal diameter is somewhat smaller than the external diameter of the hose. Thus, the hose engages flat on the openings of the pipe ends, so that this in itself leads to a liquid-tight seal.

What is claimed is: 
     
       1. A joint for a liquid-carrying pipe system, in which connected ends of two rigid pipes in each case have a joint shoulder with a disk part provided with a tooth system, arranged in a plane parallel to a longitudinal axis of the pipes and having a bore for receiving a fastening element, the fastening element having a longitudinal axis at right angles to the longitudinal axis of the pipes and, said system having a flexible hose for guiding liquid in the system through the joint, wherein the disk parts are arranged on opposite lateral sides and on either longitudinal side of the joint, the hose being connected in liquid-tight manner to the pipe ends. 
     
     
       2. A joint according to claim 1, wherein the joint shoulder for each of the two pipes has a partially cylindrical side part running at right angles to the pipe end and is connected in one piece to the disk part, said side part being provided on a front edge thereof directed away from the disk part with a tooth system, which cooperates with the tooth system of the disk part of the joint shoulders of the other of the two pipes. 
     
     
       3. A joint according to claim 2, wherein free longitudinal edges of the side parts cooperate to limit pivoting movement of the joint. 
     
     
       4. A joint according to claim 2, wherein the disk part for each of the two pipes is provided on its side facing the disk part of the other of the two pipes with a cylindrical projection for guiding a side part of the joint shoulder of said other of the two pipes. 
     
     
       5. A joint according to claim 4, wherein, with the joint assembled, free front edges of the cylindrical projections are spaced roughly corresponding to a diameter of the hose. 
     
     
       6. A joint according to claim 1, wherein the pipe ends extend directly up to the joint. 
     
     
       7. A joint according to claim 1, wherein the pipe ends are constructed in one piece with the joint shoulders. 
     
     
       8. A joint according to claim 2, wherein an outer edge of the tooth system of the disk part and the side part is in each case spaced from its particular outer edge, and the outer parts are of the disk part and the side part are toothless and are constructed for reciprocal engagement. 
     
     
       9. A joint according to claim 1, wherein the hose is rigidly secured in the pipe end in a guide surrounding it from outside and which extends directly into the joint area. 
     
     
       10. A joint according to claim 9, wherein the guide is at least partly constructed as an approximately cylindrical bore. 
     
     
       11. A joint according to claim 10, wherein the pipe end has a tubular shoulder directed away from the joint in an extension of the bore. 
     
     
       12. A joint according to claim 11, wherein the hose at least extends up to a free end of the tubular shoulder. 
     
     
       13. A joint according to claim 1, wherein the joint has an approximately cylindrical insert arranged concentrically to an axis of the joint and has a cross-hole for receiving the hose. 
     
     
       14. A joint according to claim 13, wherein the insert is placed in the cylindrical projection of a joint shoulder and is non-rotatably fixed with respect to the cylindrical projection. 
     
     
       15. A joint according to claim 13, wherein the cross-hole widens in funnel-like manner with convex side walls. 
     
     
       16. A joint according to claim 13, wherein the insert has a cage for receiving a nut. 
     
     
       17. A joint according to claim 13, wherein the insert has circumferential ribs at least in the vicinity of a cylindrical projection. 
     
     
       18. A joint acording to claim 14, wherein an inner wall of the cylindrical projection has longitudinal slots. 
     
     
       19. A joint according to claim 1, wherein at least one of the pipe ends is plastic and is pressed together with a metal pipe. 
     
     
       20. A joint according to claim 1, wherein at least one of the pipe ends is plastic and is connected to a coupling. 
     
     
       21. A joint according to claim 13, wherein the cylindrical insert is metal. 
     
     
       22. A joint for a liquid-carrying pipe system comprising two rigid pipes, each pipe having a joint shoulder of a similar construction so as to be capable of connection at random angular positions, each shoulder having a bore and a disk member provided with a tooth system and arranged in a plane parallel to a longitudinal axis of said pipes, said shoulder including a side part with a circular cylinder shape integral with the disk member, a substantially cylindrical insert centrally traversing said joint having a cross-hole for receiving a flexible hose, a flexible hose passing through said cross-hole and said joint for guiding liquid in said system through said joint, and means for fastening together said pipes. 
     
     
       23. The joint according to claim 22 wherein said insert is non-rotatably fixed within said joint.